If the Swedish government announced a new referendum on whether to adopt the common European currency, 81.6 percent of Swedes would vote no.
Only 9.6 percent would opt in, while another 8 percent told pollsters they would be undecided if push came to shove.
The attitudes of both women and men toward the euro have soured further, although Swedes were sceptical already in May when the last poll took place and showed 77 percent of Swedes were against the euro.
The number of women who would vote no has increased by 3 percentage points, while the same figure for men increased by 5 percent.
Those who said they would vote yes in May had fallen - for women, from 12 percent in the spring to today's 8 percent.
While only 8 percent of men supported joining the euro, down 7 percentage points.
The poll also showed a slight drop in the number of people who support Sweden's EU membership, down to 44.6 percent from 46.9 percent in May.
The proportion against EU membership was 26.3 percent, up from 24.2 percent in May, with 29 percent saying they had no opinion.
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Both changes are statistically significant, Statistics Sweden confirmed.